-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 UPtFDn85SIXwBOPAn7fjkhbFJWQgF2Qsn99WIQ+yoq9cBE6WUn1uDtPzlh4uhDtn
 qckIi0sWjkxRL0SpUiuf6A==

<SEC-DOCUMENT>0001297746-04-000001.txt : 20040812
<SEC-HEADER>0001297746-04-000001.hdr.sgml : 20040812
<ACCEPTANCE-DATETIME>20040812105517
ACCESSION NUMBER:		0001297746-04-000001
CONFORMED SUBMISSION TYPE:	5
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040630
FILED AS OF DATE:		20040812

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Dewey Estate of Gordon C
		CENTRAL INDEX KEY:			0001297746

	FILING VALUES:
		FORM TYPE:		5
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-02892
		FILM NUMBER:		04968869

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		201-337-4700 X 102

	MAIL ADDRESS:	
		STREET 1:		27 MULLER ROAD
		CITY:			OAKLAND
		STATE:			NJ
		ZIP:			07436

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DEWEY ELECTRONICS CORP
		CENTRAL INDEX KEY:			0000028561
		STANDARD INDUSTRIAL CLASSIFICATION:	ORDNANCE & ACCESSORIES, (NO VEHICLES/GUIDED MISSILES) [3480]
		IRS NUMBER:				131803974
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		27 MULLER RD
		CITY:			OAKLAND
		STATE:			NJ
		ZIP:			07436
		BUSINESS PHONE:		2013374700

	MAIL ADDRESS:	
		STREET 2:		27 MULLER ROAD
		CITY:			OAKLAND
		STATE:			NJ
		ZIP:			07436

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DEWEY G C CORP
		DATE OF NAME CHANGE:	19690428
</SEC-HEADER>
<DOCUMENT>
<TYPE>5
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>5</documentType>

    <periodOfReport>2004-06-30</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <form3HoldingsReported>0</form3HoldingsReported>

    <form4TransactionsReported>0</form4TransactionsReported>

    <issuer>
        <issuerCik>0000028561</issuerCik>
        <issuerName>DEWEY ELECTRONICS CORP</issuerName>
        <issuerTradingSymbol>DEWY.OB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001297746</rptOwnerCik>
            <rptOwnerName>Dewey Estate of Gordon C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>27 MULLER ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>OAKLAND</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07436</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2004-06-21</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>5</transactionFormType>
                <transactionCode>W</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>235691</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>Frances D. Dewey, Executor</signatureName>
        <signatureDate>2004-08-12</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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